ASTROSAT CZTI

Data Quality Report

Orbit 01056

Creation date: 2024-06-27T14:06:47.675566
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1P01_998T02_9000000190_01056cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01056cztM0_level2_quad_clean.evt
Size (bytes)1,043,853,120114,338,880
Size995.5 MB 109.0 MB
Events in quadrant A7,627,025775,187
Events in quadrant B8,125,059777,874
Events in quadrant C7,560,174743,181
Events in quadrant D7,883,573727,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271321
B0286121
C0269251
D0279041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6307701.109878%
B6308991.569436%
C6308620.982879%
D63081732.742549%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7472 6308 253 253 3.39% 4.01%
B 7473 6309 346 346 4.63% 5.48%
C 7473 6309 205 205 2.74% 3.25%
D 7473 6309 648 648 8.67% 10.27%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 11 79 8297 13.18 1986 1995 478.3
A 15 233 7440 11.38 1986 1995 478.3
A 3 111 6163 8.71 1986 1995 478.3
B 8 234 136130 278.98 2044 2052 480.6
B 15 22 62599 125.98 2044 2052 480.6
B 5 249 41652 82.4 2044 2052 480.6
C 15 241 326777 635.9 1835 1897 510.9
C 3 79 30136 55.27 1835 1897 510.9
C 3 111 26553 48.26 1835 1897 510.9
D 12 22 1033948 1837.26 1817 1878 561.7
D 2 107 25220 41.55 1817 1878 561.7
D 10 85 11431 17.01 1817 1878 561.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter